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/*
Unix SMB/CIFS implementation.
DATA BLOB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* This is a public header file that is installed as part of Samba.
* If you remove any functions or change their signature, update
* the so version number. */
#ifndef _SAMBA_DATABLOB_H_
#define _SAMBA_DATABLOB_H_
#ifndef _PUBLIC_
#define _PUBLIC_
#endif
#include <talloc.h>
#include <stdint.h>
/* used to hold an arbitrary blob of data */
typedef struct datablob {
uint8_t *data;
size_t length;
} DATA_BLOB;
struct data_blob_list_item {
struct data_blob_list_item *prev,*next;
DATA_BLOB blob;
};
/* by making struct ldb_val and DATA_BLOB the same, we can simplify
a fair bit of code */
#define ldb_val datablob
#define data_blob(ptr, size) data_blob_named(ptr, size, "DATA_BLOB: "__location__)
#define data_blob_talloc(ctx, ptr, size) data_blob_talloc_named(ctx, ptr, size, "DATA_BLOB: "__location__)
#define data_blob_dup_talloc(ctx, blob) data_blob_talloc_named(ctx, (blob)->data, (blob)->length, "DATA_BLOB: "__location__)
/**
construct a data blob, must be freed with data_blob_free()
you can pass NULL for p and get a blank data blob
**/
_PUBLIC_ DATA_BLOB data_blob_named(const void *p, size_t length, const char *name);
/**
construct a data blob, using supplied TALLOC_CTX
**/
_PUBLIC_ DATA_BLOB data_blob_talloc_named(TALLOC_CTX *mem_ctx, const void *p, size_t length, const char *name);
/**
reference a data blob, to the supplied TALLOC_CTX.
Returns a NULL DATA_BLOB on failure
**/
_PUBLIC_ DATA_BLOB data_blob_talloc_reference(TALLOC_CTX *mem_ctx, DATA_BLOB *blob);
/**
construct a zero data blob, using supplied TALLOC_CTX.
use this sparingly as it initialises data - better to initialise
yourself if you want specific data in the blob
**/
_PUBLIC_ DATA_BLOB data_blob_talloc_zero(TALLOC_CTX *mem_ctx, size_t length);
/**
free a data blob
**/
_PUBLIC_ void data_blob_free(DATA_BLOB *d);
/**
clear a DATA_BLOB's contents
**/
_PUBLIC_ void data_blob_clear(DATA_BLOB *d);
/**
free a data blob and clear its contents
**/
_PUBLIC_ void data_blob_clear_free(DATA_BLOB *d);
/**
check if two data blobs are equal
**/
_PUBLIC_ int data_blob_cmp(const DATA_BLOB *d1, const DATA_BLOB *d2);
/**
print the data_blob as hex string
**/
_PUBLIC_ char *data_blob_hex_string(TALLOC_CTX *mem_ctx, const DATA_BLOB *blob);
/**
useful for constructing data blobs in test suites, while
avoiding const warnings
**/
_PUBLIC_ DATA_BLOB data_blob_string_const(const char *str);
/**
* Create a new data blob from const data
*/
_PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
/**
realloc a data_blob
**/
_PUBLIC_ bool data_blob_realloc(TALLOC_CTX *mem_ctx, DATA_BLOB *blob, size_t length);
/**
append some data to a data blob
**/
_PUBLIC_ bool data_blob_append(TALLOC_CTX *mem_ctx, DATA_BLOB *blob,
const void *p, size_t length);
extern const DATA_BLOB data_blob_null;
#endif /* _SAMBA_DATABLOB_H_ */
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